A sensor linked to two fatal Boeing 737 Max crashes was flagged with the Federal Aviation Administration (FAA) more than 200 times between 2004 and the crashes in 2018 and 2019, according to an analysis by CNN.
The angle-of-attack (AOA) sensor, which measures a plane’s angle in the sky, was flagged in 216 incident reports to the FAA. These reports outlined cases in which the sensor failed or had to be replaced or fixed, and in some cases, the planes had to make emergency landings.